Thursday, September 11, 2008

Present Perfect./Present Perfect continous.

We use present perfect… For an action that started in the past and comes up in to the present, for an action which has recently finished whose result is visible in the present and has got consequences in the present, for an action which happened at a unstated time in the past and the past is not mentioned, for experiences and for an action that happened in a specific period of time which is not over the moment of speaking.

Structure:
- Affirmative: Subject + have/has + verb finished in ED / past participle of the irregular verbs.
Example -- I have started playing the game. / I have broken the window.
- Negative: Subject + Haven’t/hasn’t + verb finished in ED / past participle of the irregular verbs.
Example -- I haven’t started playing the game. / I haven’t broken the window.
-Interrogative: Have/has + subject + verb finished in ED / past participle of the irregular verbs.
Example -- Have I started playing the game? / Have I broken the window?

We use present perfect continous when the action has been started in the past and still continues in the present.


Structure:

- Affirmative: Subject + Have/has + been + verb finished in ING.
Example -- She has been watching television.
- Negative: Subject + haven’t/hasn’t + been + verb finished in ING.
Example -- She hasn’t been watching television.
- Interrogative: Have/has + subject + been + verb finished in ING.
Example -- Has she been watching television?


Credits: http://www.englishpage.com/verbpage/presentperfectcontinuous.html

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